Andrew Palumbo created MAHOUT-1440:
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Summary: Add option to set the RNG seed for inital cluster
generation in Kmeans/fKmeans
Key: MAHOUT-1440
URL: https://issues.apache.org/jira/browse/MAHOUT-1440
Project: Mahout
Issue Type: Improvement
Components: CLI, Clustering
Affects Versions: 1.0
Reporter: Andrew Palumbo
Priority: Minor
Fix For: 1.0
It was noted recently that there should be a way to set a static seed for the
the initial clusters of Kmeans. In the interests of reproducibility and
benchmarking, this patch adds an option to set the seed in the RNG used in the
RandomSeedGenerator.buildRandom() method called from the KmeansDriver and
FuzzyKMeansDriver.
I've added in a CLI option -setRandomSeed that when set to the same value will
produce reproducible results from kmeans and fkmeans.
This patch allows the user to set a value. It may make more sense to just have
an option to set a flag to use the STANDARD_SEED from RandomWrapper.
I am still feeling my way around the codebase so if this will be useful and
there need to be any changes let me know.
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